I can't speak for poison ball and goal ball, but stool ball was named for the milkmaid's stool originally used in the game as a sort of home base. The pitcher, or bowler, would throw the ball and try to hit the stool, while the batter would try to hit the ball away from the stool.
It was invented as a summer pass time game by placing a three legged stool and a bat and ball.The aim was to protect trhe ball from hitting the legs of the stool.
Because the Medieval times were horrible
The ducking stool.
The word "football" is an English term which in early medieval times was spelt "fote-ball" (first recorded c.1400) to describe a 'ball game played on foot'.
they played stool ball
A ball game is a game played with a ball, or a specific contest in any game played with a ball.
the great battles medieval game is available and you can download this game from the rapid-share.
A ball flower is an embellishment found on medieval buildings, consisting of a ball enclosed in a flower's petals.
Dumb ball
Stoolball dates back to the 15th century, and began as a game that was played by milkmaids. It was normally played during the Easter holidays, as well as a sort of courtship ritual.
Definately a British sport Answer The history of modern football games including American football, Canadian football, Australian football, Gaelic football, Association football (soccer), Rugby Union football and Rugby League football can all be traced back to a ball game often played at Shrovetide throughout medieval Western Europe. In northern France the game was called La Soule meaning "the ball". In Ireland they played a game called Caid "ball". The Cornish played Hyrlîan and the Welsh Cnapan both forms of "Hurling" (of a ball). In medieval England ball games were referred to as "playing the ball" or "playing at ball" but significantly the Shrovetide ball game was also known as "foot ball" in reference to the game being 'played on foot'. It is from this term the word 'football' originates. Over time this Shrovetide ball game evolved into the numerous forms of modern football developed by many nations throughout the World. It is worth noting that in 16th centaury Italy a ball game called Calcio meaning "kick" developed which has similarities to a Roman ball game known as Harpustum. Harpustum evolved from the Ancient Greek game Phaininda or Episkuros which is known to have been played 4000 years ago. Phaininda or Episkuros is the oldest recorded ball game with rules that fit the definition of 'foot ball'. There is a strong possibility Shrovetide ball games evolved from Harpustum, however, definitive proof of a connection remains elusive.